Nearby exoplanet is a 1st-of-its-kind 'steam world,’ James Webb …
WEB2 days ago · GJ 9827 d was first discovered by the Kepler space telescope in 2017. The exoplanet is located just 5.2 million miles (8.4 million kilometers) from its host star, GJ 9827, which is around 6% of ...
JWST finds first exotic ‘steam world’ shrouded in water vapor
WEB5 days ago · Study: JWST/NIRISS Reveals the Water-rich ‘Steam World’ Atmosphere of GJ 9827 d (DOI: 10.3847/2041-8213/ad6f00) Nearly 100 light years away, there’s a planet unlike any we’ve seen before. The planet, known as GJ 9827 d, is roughly twice the size of Earth and has an atmosphere composed almost entirely of water vapor, according to a …
ASU Scientists Contribute to Discovery of Unique "Steam ... - ASU News
WEB4 days ago · GJ 9827 d, located 98 light-years away and at roughly two times the size of the Earth, is the smallest planet known to date with a confirmed atmosphere. Previous studies had only succeeded in detecting atmospheres on much larger gas giants or mini-Neptunes, which are primarily hydrogen-based. This discovery marks the first detection of an ...
Astronomers at IREx Dive Deeper into “Steam-World” Exoplanet GJ 9827 d
WEBGJ 9827 d, a planet orbiting the star GJ 9827 in the constellation Pisces, is located about 98 light-years from Earth. Earlier this year, IREx researchers, using Hubble Space Telescope (HST) data, announced the detection of water in the atmosphere of GJ 9827 d , making it, at roughly two times the size of the Earth, the smallest exoplanet to ...
Hubble telescope spots water around tiny hot and steamy ... - Space
WEBJan 25, 2024 · The study of GJ 9827d with Hubble has marked the planet as a prime target for a follow-up investigation conducted with the James Webb Space Telescope (JWST).
NASA's Hubble Finds Water Vapor in Small Exoplanet's Atmosphere
WEBJan 25, 2024 · Astronomers using NASA's Hubble Space Telescope observed the smallest exoplanet where water vapor has been detected in the atmosphere. At only approximately twice Earth's diameter, the planet GJ 9827d could be an example of potential planets with water-rich atmospheres elsewhere in our galaxy.
Astronomers find smallest exoplanet yet with water vapor - EarthSky
WEBJan 30, 2024 · The mighty planet-hunting Kepler space telescope discovered GJ 9827 d in 2017. This world orbits its red dwarf star in only 6.2 days. And it’s now the smallest exoplanet where water vapor has...
Hubble finds signature of water vapor in exoplanet GJ 9827d's …
WEBJun 4, 2024 · The Hubble Space Telescope captured a sign of water vapor in the atmosphere of a distant exoplanet, according to an analysis of observations published last year in The Astrophysical Journal ...
Hubble finds water vapour in small exoplanet’s atmosphere
WEBJan 25, 2024 · Astronomers using the NASA/ESA Hubble Space Telescope observed the smallest exoplanet where water vapour has been detected in its atmosphere. At only approximately twice Earth’s diameter, the planet GJ 9827d could be an example of potential planets with water-rich atmospheres elsewhere in our galaxy.
JWST/NIRISS reveals the water-rich "steam world" atmosphere of GJ 9827 d
WEBOct 4, 2024 · With sizable volatile envelopes but smaller radii than the solar system ice giants, sub-Neptunes have been revealed as one of the most common types of planet in the galaxy. While the spectroscopic characterization of larger sub-Neptunes (2.5-4R$_\\oplus$) has revealed hydrogen-dominated atmospheres, smaller sub-Neptunes (1.6--2.5R$_\\oplus$) could either host thin, rapidly evaporating hydrogen ...
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